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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 119 for “"quantum optics"”.
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Quantum Optics and Mechanics in Gravitational-Wave Detectors
… the Sun, yet they remain at the whim of minute quantum fluctuations. Pushing our reach further into the cosmos demands a mastery over these quantum effects. In recent years, we have entered the era of quantum-enhanced gravitational-wave detection, wherein the injection of squeezed states has …
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Quantum Optics and Quantum Information Processing in Rare-Earth-Ion-Doped Crystals
… rare-earth-ion-doped crystals in the fields of quantum optics and quantum information processing are addressed. The experiments and theoretical considerations referred to in this thesis are based on the coherent transient interaction between light and the ions in the crystals. A photon echo …
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Efficient superconducting-nanowire single-photon detectors and their applications in quantum optics
… at a pump power of 25 iW and two-photon quantum interference visibility of 97.7% have been measured. On the other hand, increasing the active area of the detector does decrease its speed. To address the issue of efficiency-speed tradeoff, SNSPDs have been integrated with optical …
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Environmental coupling in a quantum dot as a resource for quantum optics and spin control
A single spin confined to a semiconductor quantum dot is a system of significant interest for quantum information science, as a potential optically-addressable qubit. In many respects, a quantum dot behaves like a single atom with high quality single photon emission. By controlling the light-matter …
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Tools for quantum optics : pulsed polarization-maintaining Er-doped fiber laser and spatial mode manipulation in spontaneous parametric downconversion
… for entangled photon sources, useful for quantum optics. In one project, a pulsed, mode-locked erbium-doped fiber laser, designed to be used as a seed laser for a 390 nm source, was built using polarization-maintaining components to address polarization drift. The fiber laser operated at a …
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Waveguide quantum electrodynamics with superconducting qubits
Experiments in quantum optics have long been implemented with atoms in 3D free space or with atoms interacting with cavities. Over the past decade, the field of microwave quantum optics using superconducting circuits has gained a tremendous amount of attention. In particular, the confinement of …
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Unitary transformations on temporal modes using dispersive optics for Boson Sampling and quantum simulation
… increase in the number of modes in linear optics experiments by moving from spatial encoding to temporal encoding and using dispersion. This enables significant practical advantages for linear quantum optics and Boson Sampling experiments. Passing identical, consecutively heralded photons …
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New opportunities for photon storage and detection: an exploration of a high-efficiency optical quantum memory and the quantum capabilities of the human eye
The field of quantum information has grown in recent years, due to tremendous technological advancements toward quantum networking and quantum computation. Nevertheless, there is still a great need for creative research that explores possibilities for new capabilities. Particularly, we look towards …
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Quantum Trajectory Theory of Open Cavity-QED Systems with a Time Delayed Coherent Optical Feedback
… (or solid state) photonic systems, including quantum dots, waveguides, and cavities, has provided a base to harness quantum optic phenomena for use in current and future quantum technologies. These systems also provide opportunities for exploring fundamentally new regimes in quantum optics. In …
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Microstrip Superconducting Quantum Interference Devices for Quantum Information Science
<p>Quantum-limited amplification in the microwave frequency range is of both practical and fundamental importance. The weak signals corresponding to single microwave photons require substantial amplification to resolve. When probing quantum excitations of the electromagnetic field, the substantial …
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Bridging the Geometric and Quantum Information of Structured Light
… for preparing and measuring the geometric and quantum information of structured light. The geometric phase acts as a memory of transformations undertaken by physical processes; quantum entanglement underpins quantum information science which explores the theoretical and technological …
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Indium arsenide quantum dots for single photons in the communications band
… characterizing epitaxial Indium Arsenide (InAs) quantum dots as single photon sources in the optical communications C-Band (Conventional Band; 1535 nm-1565 nm wavelength). First, the underlying theory of semiconductor quantum dots and the necessary tools from quantum optics are reviewed. Next, a …
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Entangling the spatial properties of laser beams
… squeezed states, have allowed the exploration of quantum mechanical effects that had previously been the subject of speculation only. One of the more interesting aspects of quantum mechanics is when two objects become linked in a process known as quantum entanglement. This property has been the …
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Entangling the spatial properties of laser beams
… squeezed states, have allowed the exploration of quantum mechanical effects that had previously been the subject of speculation only. One of the more interesting aspects of quantum mechanics is when two objects become linked in a process known as quantum entanglement. This property has been the …
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Coherently-driven exciton polaritons and directional cQED effects in the quantum dot-micropillar system
Cavity quantum electrodynamic (cQED) systems have attracted extensive research interest in the past decades as the main driving force of quantum optics. First experimental demonstrations focused on the enhancement of spontaneous emission and optical nonlinearities related to a single quantum …
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Electromagnetically Induced Transparency and electron spin dynamics using superconducting quantum circuits
… is an exploration on superconducting devices, quantum optics, and magnetic resonance. Superconductive quantum circuits (SQC) comprising mesoscopic Josephson junctions can exhibit quantum coherence amongst their macroscopically large degrees of freedom. They feature quantized flux and/or charge …
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